Whole lotta result playin' goin' on around here. A cautious 2♣ call (as opposed to a pushy 3♣ bid) seems absolutely called for when I am 2-1 in partner's suits. It is a 'free' bid, so pard will know I have decent playing strength and will surely raise to 3♣ looking at a hand worth around 11 points in support of ♣ and a likely 10 card trump suit. Now we should get to the RIGHT game (5♣) after I cue bid 3♦.
As far as playing in 3NT goes, all defenders have to do is not lead a spade or continue diamonds into the wheel and declarer loses 3♥, 1♦ and the ace of ♠. Most of the time this won't happen but only because East's hopeless 1♠ bid will induce West to shift to spades instead of hearts at trick two.
The board is probably going to be a push. You get +430 in a mis-defended 3NT. I get +420 in 5♣ when your team mate lets me steal the heart.

Help
